Hairspring, hairspring structure and speed control mechanism and timepiece using the same

摘要

To provide a hairspring main body having small variation in spring property even in an inclined state by enabling to minimize individual difference and difficult to undergo influence of static electricity or external magnetic field, a hairspring structure capable of being easily integrated accurately in a state of restraining individual difference to a minimum, a speed control mechanism having small variation in a property caused by an inclined state or individual difference and a movement using the same. A hairspring structure of a speed control mechanism of a movement includes a hairspring main body made of carbon nanofiber and a hairspring attaching portion made of carbon nanofiber integrally molded with the main body, coupled to one end portion of the main body and substantially rigid.